Home / 131,278.32-181,171.08-74,707.92

Finding the Fourth Proportional to 131,278.32, 181,171.08 and 74,707.92

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Solution

The fourth proportional to 131,278.32, 181,171.08 and 74,707.92 is: 103,100.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,278.32 : 181,171.08 = 74,707.92 : x
  2. Step 2: Convert to fraction form
    131,278.32/181,171.08 = 74,707.92/x
  3. Step 3: Cross multiply
    131,278.32x = 181,171.08 × 74,707.92
  4. Step 4: Simplify right side
    131,278.32x = 13,534,914,550.95
  5. Step 5: Solve for x
    x = 13,534,914,550.95/131,278.32
  6. Step 6: Final answer
    x = 103,100.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.